Clarinet tuning barrel



FIG. 1 is a perspective view of a clarinet tuning barrel showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The portions of the clarinet tuning barrel shown in broken form no part of the claimed design. 

CLAIM The ornamental design for a clarinet tuning barrel, as shown and described. 